Electric-heating system.



I S. HADAWAY, JR ELECTRIC HEATING SYSTEM.

APPLICATION FILED SEPT. 5, 1911.

Patented June 2, 1914.

7 W. W 5 W UNITED STATES PATENT OFFICE.

WILLIAM S.-HADAWAY, an, or NEW YORK, n; Y.

nrincrnrc nnarme SYSTEM.

Specification of Letters Patent. P tent d June 2, 1914:.

Application filed September 5, 1911. SerialNo. 647,694.

It has among its objects to provide an electric heating system whichis particularly adapted for use in heating masses of heatabsorptive material wherein the material s reinforced by reinforcing members embedded in the same.

A further object of my invention 1s to provide an improved heating system which is adapted to use as'a means for heating buildings, such as those of steel and concrete construction, the steel and concrete used 1n these buildings being utilized as elements of the heatin system.

Other objects and advantages of my improved construction will hereinafter appear. In accordance with a preferred form of my invention, I connect electric conductors to the reinforcing members which are embedded in the heat absorptive material from which the structure is made, and supply current to these reinforcing members. The current supplied to these members is transformed by them into heat which is absorbed from these members by the material surrounding the same. This material serves to store this heat and forms with the reinforcing members a low temperature heat reservoir. y

In the accompanying drawings I have illustrated diagrammatically one form which my invention may assume in practice. My invention is not, however, limited to this specific form.

In the views of these drawirigsz-Figure 1 shows a side elevation of a portion of my improved heating system. Fig, 2 shows a sectional view on line 2-2 of Fig. 1.

In these figures I have for purposes of illustration, showna mass of material 1, having reinforcing members 2 embedded in the same, and conductors 3 connected to the ends of these reinforcing members. The

Electric'I-Ieae.

mass 1 may be formed of any suitable material which has the capacity of absorbin' heat. If desired, I may use sucha mater'ia as concrete. The reinforcing members may be formed of'any material which has the property of radiating the heat supplied to it from an electrical source. For instancial may use reinforcing members of 'steel or" iron, such as are usually found in steel andconcrete constructions. The forms which 'these reinforcing members 2 may assume may be widely different, any form of rein-f forcing member being used which is capable of radiating heat and which would serve to supply a continuous path for the current.

By the employment of my improved 'sys-' f tern I am able to heat either large or small structures wherein reinforcing members are embedded in a mass of insulating material,

the reinforcing members serving as the conductors or reslstance elements of the heater, =1" and the mass of insulating material serving as the heat absorbing element of the heater. Since both of these eleme'nts'are found inthe usual steel and concrete constructions, I am able to provide a heating system which utilizes these two elements and provides a complete heating system without any addi tional expense, other than that incident to connecting the conductors to the extremities of the reinforcing members.

Further, by the use of my improved-system, I. am able to supply current to the minforcing or conducting members at any time, since the insulating material which surrounds the same serves as an eflicient heating storage receptacle. Consequently I may pass current through the embedded resistance elements when the "road on the central station is low; for instance, during the early hours of the morning or during the day; so that I am able to utilize the heretofore unused maximum capacity of the central station during the whole twenty-four hours of the day, the heat which is being supplied to the conductors being stored in the insulating material which surrounds the same. obvious that the heat stored in this material willbc transmitted, as for instance in'the' heating of a room, to the atmosphere in the room when the atmosphere has a temperaturc below that of the heat absorptive material, which in this instance forms'the walls" of the room. With such a construction the walls of the room serve as a low heat reser- It is Voir which by radiation or conduction heats the room when the temperature of the room falls below that of the walls.

While I have in this application described my invention as applled to one specific use and have illustrated it in one specific form, I do not wish to be limited either to this specific use or to this specific form. I Wish rather to cover all of those uses and forms of my invention which fall within the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent is as follows The method of heating a concrete building having metallic reinforcing members 

